The Filament Mystery Box (FMB) is a random sized box with randomly sized  and printed 3D prints equal or greater than $40 USD!
 
The model from the picture was printed with a Artillery Sidewinder X1, 0.2mm layer height, 0.4mm nozzle, 120mm/s speed, heated bedplate and a cooling fan. The material used in this model is 1.75mm high quality PLA+.
The PLA+ was extracted and purified from corn grain; High rigidity, good glossiness and transparency; Suitable for printing larger models; Toughness is 10 times more than the normal PLA on the market. No wiredrawing problems, the surface of the printouts will be smoother and moredelicate; No cracking problem.